Couric spent the last five years as anchor of the CBS Evening News, where she had trouble moving the ratings needle but won journalistic awards and scored several news-making coups, including a revealing 2008 interview with Sarah Palin that still haunts the presidential aspirant.

A key plank in that, as you might guess, is opposition to gay marriage -- and that has become the bone of contention in a news-making brouhaha over Apple's decision to ban the Manhattan Declaration iPhone app.